What was Joya's percentage of profit or loss per pen?

Question

Joya paid a sum of money for purchasing 20 pens, which she recovered in full when she sold 15 of them. What was her percentage of profit or loss per pen?

Answer 1

33% profit
Joya sold 15 pens for the price she paid for 20 of them, so she has a profit margin of 20/15 = 1.33

Answer 2

Let total cost price of buying 20 pens is:20x15=300Rs.
cp of one pen for joya=15 rs
selling price of one pen for joya:20rs
total profit per pen=((20-15)x100)/15=33.3333 percent is your answer

Answer 3

Profit=20-15 =5 Pen
Profit in
5/20*100=25%

Comments

The profit is based on the cost price, not the selling price.
Profit = 5/15*100=33%

Answer 4

let cost prize of one pen =1 Rs
then cost prize of 20 pens=20Rs
15 pens selling prize=20 pens cost prize=20 Rs
profit=20-15=5Rs
%profit=(5/20)*100
=25

Comments

we calculate profit on cost price not selling price.